US2496669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymerization of thiophene with styrene
Assignee: ExxonMobil Oil Corp
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Filing: 1948-12-04
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Granted: 1950-02-07
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Expires: 1968-12-04
Abstract
No abstract record available.
Inventors
- 👤 Jacob R Meadow
- 👤 Arlie A O'kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:49
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
THE PROCESS OF MANUFACTURING SYNTHETIC RESINS, WHICH COMPRISES CONTACTING THIOPHENE WITH STYRENE, IN AMOUNTS FALLING WITHIN THE RANGE OF MOLE RATIOS OF STYRENE TO THIOPHENE OF 1-3:3-1, RESPECTIVELY, IN THE PRESENCE OF HYDROGEN FLUORIDE IN AMOUNTS FALLING WITHIN THE RANGE VARYING BETWEEN 1% AND 25% BASED ON THE WEIGHT OF THIOPHENE.
Claim 2
Dependent Claim
51 words
THE PROCESS OF MANUFACTURING SYNTHETIC RESINS, WHICH COMPRISES CONTACTING THIOPHENE WITH STYRENE, IN AMOUNTS FALLING WITHIN THE RANGE OF MOLE RATIOS OF STYRENE TO THIOPHENE OF 1-3:3-1, RESPECTIVELY, IN THE PRESENCE OF HYDROGEN FLUORIDE IN AMOUNTS FALLING WITHIN THE RANGE VARYING BETWEEN 1% AND 25% BASED ON THE WEIGHT OF THIOPHENE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |